Re: 20 year boat loan
IF, the ONLY way someone can afford a boat is to take a 20 year loan, then I would agree with nearly all of these comments. However, you have to think like a wealthy person.....and understand what else is being done with the money....and how the indivdual might be looking for a tax deduction or a write-off. For example, the owner might be using the boat for "entertainment" and/or be making a lot more money elsewhere on their cash. But, even in these situations, I would think it would be best to put 50% down on it.
Some folks also earn a good portion of their income either in stock options or deferred stock payments. Depending how the assets are performing, can modify decisions. For example, cashing in an asset might be the same as taking a 30% loan on a depreciating asset, so taking a 4% boat loan seems liek a deal.